A ladder 25 feet long is leaning against a wall such that it touches 24 feet high window. How far is the foot of the ladder from the wall?
Answer & explanation
Correct answer: option 4
Height of window, P = 24 ft.
Length of Ladder, H = 25 ft.
Foot of the ladder, B = sqrt[ \( {25}^{2} \) - \( {24}^{2} \) = sqrt(625 - 576) = 7 ft
The correct answer is Option (4) → 7 feet